How popular is Celestial?

Celestial is an uncommon first name for females but a somewhat popular surname for all people (#127186 out of 150436, Top 85%). (2000 U.S. Demographics)

Which version is better?

with its source form and related girl names. Celeste(#499 a year ago), Celestine, Celestina, Celestia and Celesta are the prominent varying forms of Celestial (not ranked). Other variants, like Celestena, are seldom used. Usage of these relations of Celestial was common among parents a decade ago (usage of 0.09%) and is now much less (usage 0.03%, down 66%), with versions like Celestine going out of style. (Top 2000 Names, 2015)